1 definition by welcometothepride

Playing music in a public place via your iPhone/iPod/etc's built-in speakers rather than through headphones or earbuds, giving the sensation of having theme music or a soundtrack in real life. No fucks are given about whether or not others like your music.
"Do I hear Metallica coming from that girl's phone?"
"She's putting the 'sick' in 'theme musicking'."
by welcometothepride July 25, 2013
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